0 Bitcoin - Matthias Corvinus

Romania's "0 Bitcoin" novelty polymer pieces occupy an uncomfortable middle ground — marketed as collectibles but carrying no legal tender status, no issuing authority in any central banking sense, and a denomination that is numerically and conceptually meaningless. The Matthias Corvinus theme connects to a well-worn Romanian cultural reclamation of the 15th-century Hunyadis, but nothing about the production, security specification, or distribution chain distinguishes this from generic souvenir polymer printed to order.

A watermark on polymer is worth noting — true watermarks are a paper technology; what appears on polymer is typically a shadow image or window effect achieved during film manufacture, not a watermark in any philatelic or security-printing sense.